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Position over time relative to width of comp
Hello
I’m trying to find an expression that will control the position of a layer over the time of the comp relative to the width of the comp.
So move layer from x=0 to x =100% the width of the comp over the length/time of the comp.
I looked into thisComp.width and thisComp.duration but keep hitting dead ends. Any help appreciated, thanks.
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3 Replies
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After separating dimensions for your X & Y, here’s your X expression:
myCompWidth = thisComp.width;
myCompDuration = thisComp.duration;
myCurrentTime = time;
myPercentageIntoComp = myCurrentTime/myCompDuration;
myResult = myCompWidth * myPercentageIntoComp; -
i often use linear() to translate between unlike values like these… in this case time to position…
x = linear(time, 0, thisComp.duration, 0, thisComp.width);
[x, value[1]]Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
In case you need to clamp you can do this.
start = effect("start")("Slider");
end = effect("end")("Slider");
cTime = linear(time, 0, thisComp.duration, 0, thisComp.width);
x = clamp(cTime, start, end);
xMotion Designer / DJ / Father
http://www.lukaszpason.com
http://www.krop.com/lukasz
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